Collective Health, a startup that works with self-insured employers, just added the former chief financial officer of Restoration Hardware as a board member. At Restoration Hardware, Karen Boone implemented Collective Health to its employees. Boone also has experience taking companies public — she oversaw RH's initial public offering and is a board member at Sonos, which went public in August. A healthcare startup that's gained attention from Silicon Valley employers and investors just added a board member with IPO experience. Karen Boone, the former chief financial officer at RH, started late last month.